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How to merge a transparent png image with another image using PIL
...wing image (the alpha part of the overlayed red pixels is completely taken from the 2nd layer. The pixels are not blended correctly):
Compositing image using Image.alpha_composite like so:
final2 = Image.new("RGBA", layer1.size)
final2 = Image.alpha_composite(final2, layer1)
final2 = Image.alpha...
How do I restart nginx only after the configuration test was successful on Ubuntu?
...l -HUP $( cat /var/run/nginx.pid )
The command above reads the nginx PID from /var/run/nginx.pid. By default nginx pid is written to /usr/local/nginx/logs/nginx.pid but that can be overridden in config. Check your nginx.config to see where it saves the PID.
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Python: How to ignore an exception and proceed? [duplicate]
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There's a new way to do this coming in Python 3.4:
from contextlib import suppress
with suppress(Exception):
# your code
Here's the commit that added it: http://hg.python.org/cpython/rev/406b47c64480
And here's the author, Raymond Hettinger, talking about this and all s...
Maven and adding JARs to system scope
...lly downloaded by maven
In either case, remove the <systemPath> tag from the dependency
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JavaScript: Create and save file [duplicate]
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@user1756980 - Yes. You would need to "Save To File" from that new tab.
– Jesse Chisholm
Jul 22 '14 at 17:44
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Is It Possible to Sandbox JavaScript Running In the Browser?
... A quick test shows that Caja is unable to protect the browser from CPU attacks like while (1) {} --- it just hangs. Likewise a=[]; while (1) { a=[a,a]; }.
– David Given
Apr 3 '14 at 22:45
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How to make an HTML back link?
...r! I had to add return false; to the onclick function in Chrome to keep it from adding the current page to the browser history.
– Marshall Morrise
Dec 7 '18 at 19:59
add a com...
How to construct a WebSocket URI relative to the page URI?
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Assuming your WebSocket server is listening on the same port as from which the page is being requested, I would suggest:
function createWebSocket(path) {
var protocolPrefix = (window.location.protocol === 'https:') ? 'wss:' : 'ws:';
return new WebSocket(protocolPrefix + '//' + lo...
Google fonts URL break HTML5 Validation on w3.org
...swer this question. The reputation requirement helps protect this question from spam and non-answer activity.
Not the answer you're looking for? Browse other questions t...
When do you use the “this” keyword? [closed]
...ass itself as a parameter to other methods
To have an object return itself from a method
To declare indexers
To declare extension methods
To pass parameters between constructors
To internally reassign value type (struct) value.
To invoke an extension method on the current instance
To cast itself to ...